202139 has 8 divisors (see below), whose sum is σ = 235008. Its totient is φ = 170280.

The previous prime is 202129. The next prime is 202183. The reversal of 202139 is 931202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 202139 - 2¹² = 198043 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 202139.

It is not an unprimeable number, because it can be changed into a prime (202109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254 + ... + 684.

It is an arithmetic number, because the mean of its divisors is an integer number (29376).

2²⁰²¹³⁹ is an apocalyptic number.

202139 is a deficient number, since it is larger than the sum of its proper divisors (32869).

202139 is an equidigital number, since it uses as much as digits as its factorization.

202139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 202139 is about 449.5987099626. The cubic root of 202139 is about 58.6880983738.

The spelling of 202139 in words is "two hundred two thousand, one hundred thirty-nine".